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Dont look :3 again

 
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gogodr
I post too much
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PostPosted: Thu Aug 23, 2012 7:34 pm    Post subject: Dont look :3 again Reply with quote

Distribuciones Muestrales
Parametro: Es un numero o valor que representa una caracteristica de la poblacion. Para obtener su

valor, se debe usar toda la poblacion. Generalmente su valor es el objetivo de estudio. Los parametros

mas usados en estadistica son:
µ = (Σ Xi)/N Media o promedio
σ² = (Σ (Xi - µ)²)/N Variaza
π = (Σ Xi)/N proporcion
Estimacion o estadigrafo: es un numero o valor que representa y resume una caracteristica de la muestra

y que sirve como estimacion del valor del parametro.

Estimador o estadistica (ô) : Es una norma o regla que determina como usar los datos de la muestra. Es

funcion de las observaciones de la muestra.

** x¯ == promedio

S² { Σ (Xi - x¯)² / n-1 ; n ≤ 30
Σ (Xi - x¯)² / n ; n > 30

Teorema de distribucion de X¯

Si K muestras aleatorias de tamaño n son extraidas de una poblacion finita(N) o infinita con media µ y

varianza σ²
Las K medias X¯1, X¯2,... X¯k
a) E(x¯) = µ
b) V(x¯) = σ²x¯ { σ²/n ; Si la poblacion es infinita o el muestreo es con reposicion
σ²/n * (N-n/N-1) ; Si la poblacion es finita y el muestreo es sin reposicion
** La varianza de la muestra es la varianza de la poblacion entre el tamaño de la muestra.

Teorema de limite central

Sea x¯ = Σ Xi / n la media de una muestra aleatoria de tamaño n > 30 extraida de una poblacion finita o

infinita, entonces la variable x¯ se distribuye como una normal con media µ y varianza σ²/n
--
pagina 94 - Problema 9

El tiempo de fabricacion de una plancha de vidrio de 1m² es una variable aleatoria con distribucion

uniforme x~U[15,19]. Si se registran los tiempos de fabricacion de 200 planchas de vidrio. ¿Cual es la

probabilidad de que el tiempo promedio muestral sea menor que 16,85 min?
X~U[a,b]
µ = (a+b)/2
σ² = (b-a)²/12

x¯~N(17,0.081²)
P(x¯ < 16.85) = 0.032

--
Caso de distribucion de la media muestral

Poblacion normal y σ² conocida: X¯~ n(µ;σ²/n)
Poblacion no normal n > 30 : X¯ ~ n(µ,σ²/n)
poblacion normal y σ² desconocida(Se usa S²): t = (x¯-µ) / (S/√n) ~ t(n-1)

-This was done in paint, bored in class
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Kargarok
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PostPosted: Thu Aug 23, 2012 7:41 pm    Post subject: Reply with quote

You had the patience do do that
in paint
you are saint level
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elpacco
Grandmaster Cheater Supreme
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PostPosted: Thu Aug 23, 2012 7:43 pm    Post subject: Reply with quote

Why don't you just use pastebin?
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[AM]Misery wrote:

FangBanger wrote:
What is the best way for a lv19 Soldier to solo Sledge on Borderlands?
Shoot him.
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br0l0ck
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PostPosted: Thu Aug 23, 2012 7:57 pm    Post subject: Reply with quote

i wish i was the mod of rs so i could delete your fucking stupid posts
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Maes
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Joined: 09 Apr 2009
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PostPosted: Thu Aug 23, 2012 7:58 pm    Post subject: Reply with quote

>tells us not to look at his topic
>includes something for us specifically
It's almost like he's posting to show off his unimpressive work.
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gogodr
I post too much
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Joined: 19 Dec 2006
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PostPosted: Thu Aug 23, 2012 8:06 pm    Post subject: Reply with quote

Brolock wrote:
i wish i was the mod of rs so i could delete your fucking stupid posts

>delete stupid posts of RS

thats why are not mod
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br0l0ck
Cheater
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PostPosted: Thu Aug 23, 2012 8:06 pm    Post subject: Reply with quote

gogodr wrote:
Brolock wrote:
i wish i was the mod of rs so i could delete your fucking stupid posts

>delete stupid posts of RS

thats why are not mod
no not all the stupid posts in rs just yours.
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gogodr
I post too much
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Joined: 19 Dec 2006
Posts: 2041

PostPosted: Thu Aug 23, 2012 8:07 pm    Post subject: Reply with quote

Brolock wrote:
gogodr wrote:
Brolock wrote:
i wish i was the mod of rs so i could delete your fucking stupid posts

>delete stupid posts of RS

thats why are not mod
no not all the stupid posts in rs just yours.
>I'm not all the stupid posts
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Sui
Expert Cheater
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Joined: 04 Sep 2008
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PostPosted: Thu Aug 23, 2012 8:10 pm    Post subject: Reply with quote

Los parametros gibe moni pliz i riport u hueuehuehue.
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